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Rytidosperma biannulare

(Zotov) Connor & Edgar (1979)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Monocots Order: Poales Family: Poaceae Genus: Rytidosperma

tasmanian wallaby grass

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Description

Key Characters:

Growth Form:

Stems:

Roots:

Leaves:

Flowers:

Fruit:

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Images

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Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

O'ahu Only found in cultivation
Molokai Naturalized
Maui Naturalized

Dispersal Agents


Pollinators

Bibliography

Name Published In: New Zealand J. Bot. 17: 324 (1979)

Other References

Wagner et al. 1990:1522 (Mo? [reported by Whitney in 1939 as introduced in 1903], EM? [as Danthonia semiannularis, adventive], DESCR); Herbst & Clayton 1998:34 (Syn. D. semiannularis = Rytidosperma semiannulare, KEY); Starr et al. 2004:27 (EM, WM [as R. semiannulare]); Snow 2008:40 (NEWNAT/Mo, M? [as R. biannulare, spm. not seen], DESCR); Snow & Lau 2010:56 (errata in Snow 2008); Darbyshire et al. 2010:665 (R. semiannulare misapplied = R. biannulare); Faccenda 2025b:120 (KEY)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Rytidosperma biannulare Onini/Kupaia divide Along unpaved 4WD road in Mesic Shrubland. Preserved_Specimen Common grass. Oppenheimer, H.L. 50635 Molokai BISH 2005-05-16
2 Rytidosperma biannulare Keunakakai. Upper edge of pasture upper edge of pasture. Rare. Preserved_Specimen Hosaka, E.Y. 3624 Molokai BISH 1950-12-23
3 Rytidosperma biannulare East Maui, Hana District, S slope of Kuiki on rim of Kaupo Gap Subalpine Shrubland. Associated vegetation: Metrosideros, Vaccinium, Morelotia, Sadleria, Deschampsia, Dubautia, Lysimachia, Holcus, Hypochoeris. Preserved_Specimen Oppenheimer, H.L. 60614 Maui BISH 2006-06-06
4 Rytidosperma biannulare near unpaved road W of Onini Gulch Rare on open ridge in short statured shrubland on cindery substrate. Veg: Leptecophylla, Metrosideros, Pteridium, Dodonaea, Melinis, Andropogon, Vulpia, Hypochoeris, Pinus Preserved_Specimen Oppenheimer, H.L. 50901 Molokai BISH 2009-05-04
5 Rytidosperma biannulare Kamakou Preserve, trail along Kawela Gulch near intake and tunnel, East Moloka'i. Montane wet Metrosideros/Cheirodendron forest with native shrubs ferns, and few alien grasses. Preserved_Specimen Perennial grass with white hairy spikelets. Pratt, L.W. 1140 Molokai BISH 1982-05-22
6 Rytidosperma biannulare Kamokou Preserve, Kupai`a Gulch, East Moloka`i. Gulch in montane Metrosideros/native shrubland Preserved_Specimen Perennial grass with white hairy spikelets. Pratt, L.W. 1254 Molokai BISH 1982-05-31
7 Rytidosperma biannulare Kamakou Preserve near Pu'u Kolekole, East Molokai Gulch in montane metrosideros forest Preserved_Specimen Small perennial bunchgrass Pratt, L.W. 1171 Molokai BISH 1982-05-24
8 Rytidosperma biannulare West Maui, Lahaina District, Ukumehame. Locally common along unpaved, disturbed roadside in windswept shrubland. Vegetation: Metrosideros, Dodonaea, Dicranopteris, Leptecophylla, Vaccinium, Sadleria, Carex, Erigeron, Paspalum. Preserved_Specimen Oppenheimer, H.L. 51206 Maui BISH 2012-05-29
9 Rytidosperma biannulare east Maui, Hana District, Kipahulu, Forest Reserve, west of Manawainui, Valley, east of Kaupo Gap. in goat and pig damaged Acacia Montane Mesic Forest, with Melinis, Deschampsia, Holcus, Eragrostis brownei. Preserved_Specimen Locally common grass Oppenheimer, H.L. 51515 Maui BISH 2015-05-15
10 Rytidosperma biannulare West Maui, Wailuku District, Pohakea/Kaonohua Divide Scattered in open, cindery ground formerly grazed, in degraded shrubland. Vegetation: Metrosideros, Dodonaea, Leptecophylla, Wikstroemia, Osteomeles, Trisetum, Eragrostis, Dubautia, Vaccinium, Bidens. Preserved_Specimen Oppenheimer, H.L. 50725 Maui BISH 2007-05-22
11 Rytidosperma biannulare W Maui, Hanaulaiki Preserved_Specimen Hobdy, R.W. 2389 Maui BISH 1985-05-01
12 Rytidosperma biannulare East Maui, Haleakala Crater, Base of Waikane springs talus slopes Preserved_Specimen Welton, P. 1858001 Maui BISH 1994-08-09
13 Rytidosperma biannulare Poamoho Preserved_Specimen Lyman, R. Oahu BISH 1939-04-26
14 Rytidosperma biannulare East Maui, Olinda, Piiholo Road. Preserved_Specimen Hobdy, R.W. 4313 Maui BISH 2009-06-14
15 Rytidosperma biannulare East Maui, Haleakal Peak fenceline Preserved_Specimen Welton, P. 1697 Maui BISH 1993-02-11
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